Azure AD Connect High CPU Usage detected

I recently started receiving a lot of emails from Azure AD Connect Health in one of my lab environments indicating that my AAD Connect server was experiencing high CPU usage:

I remembered seeing a tweet from fellow MVP Jeff Guillet about this - He's been tracking this for a while and as it turns out the issue is caused by a buggy Windows update for .NET framework. You can read all about it in the following posts on his The EXPTA {blog}: